The Professional 400x 256GB SDXC UHS-I is a Class 10 card that boasts a guaranteed sustained transfer speed—at least when reading data—of 60 MB per second. Just make sure you're using it with a card reader that can keep up. And, not surprisingly, when it's available next month Lexar expects you to cough up $900 for the privilege of rarely having to delete photos off your camera. [Lexar via PetaPixel]